Malware Analysis Report

2025-01-02 11:08

Sample ID 240314-mv9bbscd27
Target c86fb1ccf52b74b89a9d2bbea2c221ec
SHA256 fa8a87c1274f9db8fb49732f98406aa8c4a48ec42c72dee7a9b2571aa48895ff
Tags
smokeloader pub1 backdoor trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

fa8a87c1274f9db8fb49732f98406aa8c4a48ec42c72dee7a9b2571aa48895ff

Threat Level: Known bad

The file c86fb1ccf52b74b89a9d2bbea2c221ec was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Executes dropped EXE

Deletes itself

Loads dropped DLL

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-14 10:48

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 10:48

Reported

2024-03-14 10:50

Platform

win7-20240221-en

Max time kernel

151s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\dvhhdhu N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Roaming\dvhhdhu

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe

"C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {6B9E4C8B-2F6A-46C1-BECC-EDF750FC0F99} S-1-5-21-2461186416-2307104501-1787948496-1000:MGILJUBR\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\dvhhdhu

C:\Users\Admin\AppData\Roaming\dvhhdhu

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1292 -s 124

Network

Country Destination Domain Proto
US 8.8.8.8:53 conceitosseg.com udp
US 8.8.8.8:53 integrasidata.com udp
SG 172.104.187.4:80 integrasidata.com tcp
US 8.8.8.8:53 ozentekstil.com udp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
US 8.8.8.8:53 finbelportal.com udp
US 8.8.8.8:53 telanganadigital.com udp
US 192.64.119.13:80 telanganadigital.com tcp
US 8.8.8.8:53 www.telanganadigital.com udp
DE 91.195.240.19:80 www.telanganadigital.com tcp

Files

memory/2584-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

memory/2584-2-0x00000000001B0000-0x00000000001B9000-memory.dmp

\Users\Admin\AppData\Local\Temp\CC4F.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/2584-6-0x0000000000400000-0x0000000002C63000-memory.dmp

memory/1196-7-0x0000000002980000-0x0000000002995000-memory.dmp

memory/2584-8-0x0000000000400000-0x0000000002C63000-memory.dmp

memory/2584-11-0x00000000001B0000-0x00000000001B9000-memory.dmp

C:\Users\Admin\AppData\Roaming\dvhhdhu

MD5 c86fb1ccf52b74b89a9d2bbea2c221ec
SHA1 b650cc25f8deba2748ad7a81428169ea5876c47a
SHA256 fa8a87c1274f9db8fb49732f98406aa8c4a48ec42c72dee7a9b2571aa48895ff
SHA512 0396507c2a566e82fef97b2853fbff846cbed4958cc685c13fc3debb00e0d151ec1104e5bb499e7913a44a4ea6ef26f55cbb6e59a28e7d8be9eb78777b1319a5

memory/1292-19-0x00000000030D0000-0x00000000031D0000-memory.dmp

memory/1292-20-0x0000000000400000-0x0000000002C63000-memory.dmp

memory/1292-28-0x00000000030D0000-0x00000000031D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 10:48

Reported

2024-03-14 10:50

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\gcegbut N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gcegbut N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Roaming\gcegbut

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcegbut N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcegbut N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\gcegbut N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\gcegbut N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A N/A N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe

"C:\Users\Admin\AppData\Local\Temp\c86fb1ccf52b74b89a9d2bbea2c221ec.exe"

C:\Users\Admin\AppData\Roaming\gcegbut

C:\Users\Admin\AppData\Roaming\gcegbut

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4472 -ip 4472

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4472 -s 392

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 33.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 conceitosseg.com udp
US 8.8.8.8:53 integrasidata.com udp
SG 172.104.187.4:80 integrasidata.com tcp
US 8.8.8.8:53 ozentekstil.com udp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:80 ozentekstil.com tcp
TR 94.73.151.78:443 ozentekstil.com tcp
US 8.8.8.8:53 4.187.104.172.in-addr.arpa udp
US 8.8.8.8:53 78.151.73.94.in-addr.arpa udp
US 8.8.8.8:53 finbelportal.com udp
US 8.8.8.8:53 telanganadigital.com udp
US 192.64.119.13:80 telanganadigital.com tcp
US 8.8.8.8:53 www.telanganadigital.com udp
DE 91.195.240.19:80 www.telanganadigital.com tcp
US 8.8.8.8:53 13.119.64.192.in-addr.arpa udp
US 8.8.8.8:53 19.240.195.91.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 168.117.168.52.in-addr.arpa udp

Files

memory/3944-1-0x0000000002C90000-0x0000000002D90000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\CC4F.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/3944-6-0x0000000000400000-0x0000000002C63000-memory.dmp

memory/3944-7-0x0000000002DF0000-0x0000000002DF9000-memory.dmp

memory/3484-8-0x0000000002C30000-0x0000000002C45000-memory.dmp

memory/3944-10-0x0000000000400000-0x0000000002C63000-memory.dmp

C:\Users\Admin\AppData\Roaming\gcegbut

MD5 c86fb1ccf52b74b89a9d2bbea2c221ec
SHA1 b650cc25f8deba2748ad7a81428169ea5876c47a
SHA256 fa8a87c1274f9db8fb49732f98406aa8c4a48ec42c72dee7a9b2571aa48895ff
SHA512 0396507c2a566e82fef97b2853fbff846cbed4958cc685c13fc3debb00e0d151ec1104e5bb499e7913a44a4ea6ef26f55cbb6e59a28e7d8be9eb78777b1319a5

memory/4472-20-0x0000000002F20000-0x0000000003020000-memory.dmp

memory/4472-24-0x0000000000400000-0x0000000002C63000-memory.dmp

memory/3484-25-0x0000000002660000-0x0000000002675000-memory.dmp

memory/4472-28-0x0000000000400000-0x0000000002C63000-memory.dmp